CMake: Fix "CMake settings have changed on disk"

* Improve the UI by showing settings in CMake and the project
* Fix setting CMake configuration to project

Change-Id: I6e127344551fa00f3f7e6170465cb3dda2e4a634
Task-number: QTCREATORBUG-17555
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/cmakeprojectmanager/cmakebuildsettingswidget.h

@@ -65,6 +65,7 @@ private:
     void updateAdvancedCheckBox();
     void updateFromKit();
 
+    void setConfigurationForCMake();
     void updateSelection(const QModelIndex &current, const QModelIndex &previous);
     QAction *createForceAction(int type, const QModelIndex &idx);